/*
 * Copyright (C) 2005-2011 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008-2011 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010-2011 ProjectSkyfire <http://www.projectskyfire.org/>
 * 
 * Copyright (C) 2011 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _FORMATIONS_H
#define _FORMATIONS_H

#include "Common.h"

class CreatureGroup;

struct FormationInfo {
	uint32 leaderGUID;
	float follow_dist;
	float follow_angle;
	uint8 groupAI;
};

class CreatureGroupManager {
	friend class ACE_Singleton<CreatureGroupManager, ACE_Null_Mutex> ;
public:
	void AddCreatureToGroup(uint32 group_id, Creature *creature);
	void RemoveCreatureFromGroup(CreatureGroup *group, Creature *creature);
	void LoadCreatureFormations();
};

#define formation_mgr ACE_Singleton<CreatureGroupManager, ACE_Null_Mutex>::instance()

typedef UNORDERED_MAP<uint32/*memberDBGUID*/, FormationInfo*> CreatureGroupInfoType;

extern CreatureGroupInfoType CreatureGroupMap;

class CreatureGroup {
private:
	Creature *m_leader; //Important do not forget sometimes to work with pointers instead synonims :D:D
	typedef std::map<Creature*, FormationInfo*> CreatureGroupMemberType;
	CreatureGroupMemberType m_members;

	uint32 m_groupID;
	bool m_Formed;

public:
	//Group cannot be created empty
	explicit CreatureGroup(uint32 id) :
			m_leader(NULL), m_groupID(id), m_Formed(false) {
	}
	~CreatureGroup() {
		sLog->outDebug(LOG_FILTER_UNITS, "Destroying group");
	}

	Creature* getLeader() const {
		return m_leader;
	}
	uint32 GetId() const {
		return m_groupID;
	}
	bool isEmpty() const {
		return m_members.empty();
	}
	bool isFormed() const {
		return m_Formed;
	}

	void AddMember(Creature *member);
	void RemoveMember(Creature *member);
	void FormationReset(bool dismiss);

	void LeaderMoveTo(float x, float y, float z);
	void MemberAttackStart(Creature* member, Unit *target);
};

#endif
